/**
 * Nexus Bridge Generator
 *
 * Generates .cleo/nexus-bridge.md from nexus.db content. This file is
 * the code intelligence equivalent of memory-bridge.md — it summarizes
 * the codebase graph for agent consumption.
 *
 * Content assembly:
 *   - Index status (file count, node count, relation count, last indexed)
 *   - Symbol counts by kind (functions, classes, methods, etc.)
 *   - Relation counts by type (calls, imports, extends, etc.)
 *   - Top entry points (most outgoing CALLS edges, exported)
 *   - Functional clusters (communities by symbol count)
 *   - Code intelligence command reference
 *
 * Regeneration triggers:
 *   - cleo nexus analyze (called after pipeline flush)
 *   - Manual: cleo nexus refresh-bridge
 *
 * @task T551
 * @epic T549
 */
import { type EngineResult } from '../engine-result.js';
/**
 * Generate nexus bridge markdown content from nexus.db.
 * Returns the full markdown string (does not write to disk).
 *
 * @param projectId - Project registry ID used to scope nexus.db queries
 * @param repoPath - Absolute path to the repository root (used for display)
 * @returns Markdown string summarizing the code intelligence index
 */
export declare function generateNexusBridgeContent(projectId: string, repoPath: string): Promise<string>;
/**
 * Write nexus bridge content to .cleo/nexus-bridge.md.
 *
 * When `brain.memoryBridge.mode` is `'cli'` (default), the file write is skipped
 * and the function returns `{ written: false }` without error (T999). This keeps
 * nexus-bridge behaviour aligned with memory-bridge — the two bridges share the
 * same injection-mode gate.
 *
 * Set mode to `'file'` to restore legacy file-based injection behaviour.
 *
 * @param projectRoot - Absolute path to the project root
 * @param projectId - Project registry ID (used to scope nexus.db queries)
 * @returns Result with path and whether the file was written
 */
export declare function writeNexusBridge(projectRoot: string, projectId?: string): Promise<{
    path: string;
    written: boolean;
}>;
/**
 * Best-effort nexus bridge refresh. Never throws.
 * Called after cleo nexus analyze completes.
 *
 * @param projectRoot - Absolute path to the project root
 * @param projectId - Project registry ID (used to scope nexus.db queries)
 */
export declare function refreshNexusBridge(projectRoot: string, projectId?: string): Promise<void>;
export declare function nexusRefreshBridge(repoPath: string, projectId?: string): Promise<EngineResult<{
    path: string;
    written: boolean;
    projectId: string;
    repoPath: string;
}>>;
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